i don't know it.pi said nelson mandela just sent it to me. ♪ bring back nelson mandela ♪ ♪ bring him back homing to soweto ♪ >> by the late 1980s, the entire world tuned in to south african's struggle. ♪ free mandela ♪ ♪ we want freedom in south africa ♪ ♪ free nelson mandela ♪ >> through music, the cry for justice was heard by millions. >> hugh masekela. >> when we did "graceland" with paul simon, we played to more than ten million people who had never heard of south africa or apartheid before and it really grabbed the world. ♪ bring back nelson mandela ♪ ♪ bring him back home to soweto ♪ ♪ i want to see him walking down the street ♪ ♪ with winnie mandala ♪ >> it's the sight of nelson mandela walking strongly to freedom. >> the day he came out of jail and he came out like this, the whole world screamed. >> africa! >> so many people trying to put his life in context right now. i heard one historian say, he was south africa's abraham lincoln. >> i love that analogy and it totally works. >>> cbs news will have much more on nelson mandela tonight in a speci